1991 Ford Ranger 4WD with 4.0 engine and manual transmission.
Today I was up at 10,000 feet in Colorado with my truck to go hiking.
I live at 5000 feet and it was very steep highway roads coming home.
I have lived in the mountains many years and do not ride the brake instead
I downshift to slow down. The brakes worked fine all the way down the one hour
ride down to town. Once in town the truck had a very slight pull to one side
when I braked which it did not have before. I stopped for 10 minutes to do an errand.
When I got back it the truck and took off the brake pedal went all the way to the floor and I had no brakes…stopped with the emergency brake.
I checked the reservoir and it was full and no brake fluid leaking at the wheels or lines. Triple A took two hours to come and after an hour I tried the brakes again and now I had a pedal. It was not the normal pedal but it was able to stop the truck. I waited and got towed to my house.
I jacked up the truck and pulled all the wheels off and by now it was dark. I did not pull the rear drums but inspected the front brakes and Calipers and pads. On the left front the
Outer rim of the rotor and the inner circle, where the pads don’t have contact, are a pinkish red. The same color on the outside of the pads. Almost like dust. The outside of the pads also have white crustation. Please see pictures. The rubber dust cover on the piston of the caliper was brittle on the end closest to the pad. The other side has no discoloring. When I turned the rotor by hand it was harder to turn then the right side. I am guessing that it overheated but why? Is it hard to turn because of the overheating or did it overheat because it was hard to turn and the pads were rubbing. Why would I loose the brake pedal completely.
Has anyone heard of this happening?? I didn’t think it was possible to loose all brakes from overheating a rotor.
It is a dual circuit master cylinder so wouldn’t the rear brakes still work….and why would the pedal come back an hour later. I am wondering if I need to change the master cylinder besides the rotor and caliper and pads…and should I change the caliper on the other side. I just want to make sure this does not happen again. I am so anxious about what happened today because if the brakes failed 20 minutes earlier I would have went off the mountain. Any help is appreciated.